course/edit_form.php

   1 <?php
   2
   3 defined('MOODLE_INTERNAL') || die;
   4
   5 require_once($CFG->libdir.'/formslib.php');
   6 require_once($CFG->libdir.'/completionlib.php');
   7 require_once($CFG->libdir . '/pdflib.php');
   8
   9 /**
  10  * The form for handling editing a course.
  11  */
  12 class course_edit_form extends moodleform {
  13     protected $course;
  14     protected $context;
  15
  16     /**
  17      * Form definition.
  18      */
  19     function definition() {
  20         global $CFG, $PAGE;
  21
  22         $mform    = $this->_form;
  23         $PAGE->requires->js_call_amd('core_course/formatchooser', 'init');
  24
  25         $course        = $this->_customdata['course']; // this contains the data of this form
  26         $category      = $this->_customdata['category'];
  27         $editoroptions = $this->_customdata['editoroptions'];
  28         $returnto = $this->_customdata['returnto'];
  29         $returnurl = $this->_customdata['returnurl'];
  30
  31         $systemcontext   = context_system::instance();
  32         $categorycontext = context_coursecat::instance($category->id);
  33
  34         if (!empty($course->id)) {
  35             $coursecontext = context_course::instance($course->id);
  36             $context = $coursecontext;
  37         } else {
  38             $coursecontext = null;
  39             $context = $categorycontext;
  40         }
  41
  42         $courseconfig = get_config('moodlecourse');
  43
  44         $this->course  = $course;
  45         $this->context = $context;
  46
  47         // Form definition with new course defaults.
  48         $mform->addElement('header','general', get_string('general', 'form'));
  49
  50         $mform->addElement('hidden', 'returnto', null);
  51         $mform->setType('returnto', PARAM_ALPHANUM);
  52         $mform->setConstant('returnto', $returnto);
  53
  54         $mform->addElement('hidden', 'returnurl', null);
  55         $mform->setType('returnurl', PARAM_LOCALURL);
  56         $mform->setConstant('returnurl', $returnurl);
  57
  58         $mform->addElement('text','fullname', get_string('fullnamecourse'),'maxlength="254" size="50"');
  59         $mform->addHelpButton('fullname', 'fullnamecourse');
  60         $mform->addRule('fullname', get_string('missingfullname'), 'required', null, 'client');
  61         $mform->setType('fullname', PARAM_TEXT);
  62         if (!empty($course->id) and !has_capability('moodle/course:changefullname', $coursecontext)) {
  63             $mform->hardFreeze('fullname');
  64             $mform->setConstant('fullname', $course->fullname);
  65         }
  66
  67         $mform->addElement('text', 'shortname', get_string('shortnamecourse'), 'maxlength="100" size="20"');
  68         $mform->addHelpButton('shortname', 'shortnamecourse');
  69         $mform->addRule('shortname', get_string('missingshortname'), 'required', null, 'client');
  70         $mform->setType('shortname', PARAM_TEXT);
  71         if (!empty($course->id) and !has_capability('moodle/course:changeshortname', $coursecontext)) {
  72             $mform->hardFreeze('shortname');
  73             $mform->setConstant('shortname', $course->shortname);
  74         }
  75
  76         // Verify permissions to change course category or keep current.
  77         if (empty($course->id)) {
  78             if (has_capability('moodle/course:create', $categorycontext)) {
  79                 $displaylist = core_course_category::make_categories_list('moodle/course:create');
  80                 $mform->addElement('autocomplete', 'category', get_string('coursecategory'), $displaylist);
  81                 $mform->addRule('category', null, 'required', null, 'client');
  82                 $mform->addHelpButton('category', 'coursecategory');
  83                 $mform->setDefault('category', $category->id);
  84             } else {
  85                 $mform->addElement('hidden', 'category', null);
  86                 $mform->setType('category', PARAM_INT);
  87                 $mform->setConstant('category', $category->id);
  88             }
  89         } else {
  90             if (has_capability('moodle/course:changecategory', $coursecontext)) {
  91                 $displaylist = core_course_category::make_categories_list('moodle/course:changecategory');
  92                 if (!isset($displaylist[$course->category])) {
  93                     //always keep current
  94                     $displaylist[$course->category] = core_course_category::get($course->category, MUST_EXIST, true)
  95                         ->get_formatted_name();
  96                 }
  97                 $mform->addElement('autocomplete', 'category', get_string('coursecategory'), $displaylist);
  98                 $mform->addRule('category', null, 'required', null, 'client');
  99                 $mform->addHelpButton('category', 'coursecategory');
 100             } else {
 101                 //keep current
 102                 $mform->addElement('hidden', 'category', null);
 103                 $mform->setType('category', PARAM_INT);
 104                 $mform->setConstant('category', $course->category);
 105             }
 106         }
 107
 108         $choices = array();
 109         $choices['0'] = get_string('hide');
 110         $choices['1'] = get_string('show');
 111         $mform->addElement('select', 'visible', get_string('coursevisibility'), $choices);
 112         $mform->addHelpButton('visible', 'coursevisibility');
 113         $mform->setDefault('visible', $courseconfig->visible);
 114         if (!empty($course->id)) {
 115             if (!has_capability('moodle/course:visibility', $coursecontext)) {
 116                 $mform->hardFreeze('visible');
 117                 $mform->setConstant('visible', $course->visible);
 118             }
 119         } else {
 120             if (!guess_if_creator_will_have_course_capability('moodle/course:visibility', $categorycontext)) {
 121                 $mform->hardFreeze('visible');
 122                 $mform->setConstant('visible', $courseconfig->visible);
 123             }
 124         }
 125
 126         // Download course content.
 127         if ($CFG->downloadcoursecontentallowed) {
 128             $downloadchoices = [
 129                 DOWNLOAD_COURSE_CONTENT_DISABLED => get_string('no'),
 130                 DOWNLOAD_COURSE_CONTENT_ENABLED => get_string('yes'),
 131             ];
 132             $sitedefaultstring = $downloadchoices[$courseconfig->downloadcontentsitedefault];
 133             $downloadchoices[DOWNLOAD_COURSE_CONTENT_SITE_DEFAULT] = get_string('sitedefaultspecified', '', $sitedefaultstring);
 134             $downloadselectdefault = $courseconfig->downloadcontent ?? DOWNLOAD_COURSE_CONTENT_SITE_DEFAULT;
 135
 136             $mform->addElement('select', 'downloadcontent', get_string('enabledownloadcoursecontent', 'course'), $downloadchoices);
 137             $mform->addHelpButton('downloadcontent', 'downloadcoursecontent', 'course');
 138             $mform->setDefault('downloadcontent', $downloadselectdefault);
 139
 140             if ((!empty($course->id) && !has_capability('moodle/course:configuredownloadcontent', $coursecontext)) ||
 141                     (empty($course->id) &&
 142                     !guess_if_creator_will_have_course_capability('moodle/course:configuredownloadcontent', $categorycontext))) {
 143                 $mform->hardFreeze('downloadcontent');
 144                 $mform->setConstant('downloadcontent', $downloadselectdefault);
 145             }
 146         }
 147
 148         $mform->addElement('date_time_selector', 'startdate', get_string('startdate'));
 149         $mform->addHelpButton('startdate', 'startdate');
 150         $date = (new DateTime())->setTimestamp(usergetmidnight(time()));
 151         $date->modify('+1 day');
 152         $mform->setDefault('startdate', $date->getTimestamp());
 153
 154         $mform->addElement('date_time_selector', 'enddate', get_string('enddate'), array('optional' => true));
 155         $mform->addHelpButton('enddate', 'enddate');
 156
 157         if (!empty($CFG->enablecourserelativedates)) {
 158             $attributes = [
 159                 'aria-describedby' => 'relativedatesmode_warning'
 160             ];
 161             if (!empty($course->id)) {
 162                 $attributes['disabled'] = true;
 163             }
 164             $relativeoptions = [
 165                 0 => get_string('no'),
 166                 1 => get_string('yes'),
 167             ];
 168             $relativedatesmodegroup = [];
 169             $relativedatesmodegroup[] = $mform->createElement('select', 'relativedatesmode', get_string('relativedatesmode'),
 170                 $relativeoptions, $attributes);
 171             $relativedatesmodegroup[] = $mform->createElement('html', html_writer::span(get_string('relativedatesmode_warning'),
 172                 '', ['id' => 'relativedatesmode_warning']));
 173             $mform->addGroup($relativedatesmodegroup, 'relativedatesmodegroup', get_string('relativedatesmode'), null, false);
 174             $mform->addHelpButton('relativedatesmodegroup', 'relativedatesmode');
 175         }
 176
 177         $mform->addElement('text','idnumber', get_string('idnumbercourse'),'maxlength="100"  size="10"');
 178         $mform->addHelpButton('idnumber', 'idnumbercourse');
 179         $mform->setType('idnumber', PARAM_RAW);
 180         if (!empty($course->id) and !has_capability('moodle/course:changeidnumber', $coursecontext)) {
 181             $mform->hardFreeze('idnumber');
 182             $mform->setConstants('idnumber', $course->idnumber);
 183         }
 184
 185         // Description.
 186         $mform->addElement('header', 'descriptionhdr', get_string('description'));
 187         $mform->setExpanded('descriptionhdr');
 188
 189         $mform->addElement('editor','summary_editor', get_string('coursesummary'), null, $editoroptions);
 190         $mform->addHelpButton('summary_editor', 'coursesummary');
 191         $mform->setType('summary_editor', PARAM_RAW);
 192         $summaryfields = 'summary_editor';
 193
 194         if ($overviewfilesoptions = course_overviewfiles_options($course)) {
 195             $mform->addElement('filemanager', 'overviewfiles_filemanager', get_string('courseoverviewfiles'), null, $overviewfilesoptions);
 196             $mform->addHelpButton('overviewfiles_filemanager', 'courseoverviewfiles');
 197             $summaryfields .= ',overviewfiles_filemanager';
 198         }
 199
 200         if (!empty($course->id) and !has_capability('moodle/course:changesummary', $coursecontext)) {
 201             // Remove the description header it does not contain anything any more.
 202             $mform->removeElement('descriptionhdr');
 203             $mform->hardFreeze($summaryfields);
 204         }
 205
 206         // Course format.
 207         $mform->addElement('header', 'courseformathdr', get_string('type_format', 'plugin'));
 208
 209         $courseformats = get_sorted_course_formats(true);
 210         $formcourseformats = array();
 211         foreach ($courseformats as $courseformat) {
 212             $formcourseformats[$courseformat] = get_string('pluginname', "format_$courseformat");
 213         }
 214         if (isset($course->format)) {
 215             $course->format = course_get_format($course)->get_format(); // replace with default if not found
 216             if (!in_array($course->format, $courseformats)) {
 217                 // this format is disabled. Still display it in the dropdown
 218                 $formcourseformats[$course->format] = get_string('withdisablednote', 'moodle',
 219                         get_string('pluginname', 'format_'.$course->format));
 220             }
 221         }
 222
 223         $mform->addElement('select', 'format', get_string('format'), $formcourseformats, [
 224             'data-formatchooser-field' => 'selector',
 225         ]);
 226         $mform->addHelpButton('format', 'format');
 227         $mform->setDefault('format', $courseconfig->format);
 228
 229         // Button to update format-specific options on format change (will be hidden by JavaScript).
 230         $mform->registerNoSubmitButton('updatecourseformat');
 231         $mform->addElement('submit', 'updatecourseformat', get_string('courseformatudpate'), [
 232             'data-formatchooser-field' => 'updateButton',
 233             'class' => 'd-none',
 234         ]);
 235
 236         // Just a placeholder for the course format options.
 237         $mform->addElement('hidden', 'addcourseformatoptionshere');
 238         $mform->setType('addcourseformatoptionshere', PARAM_BOOL);
 239
 240         // Appearance.
 241         $mform->addElement('header', 'appearancehdr', get_string('appearance'));
 242
 243         if (!empty($CFG->allowcoursethemes)) {
 244             $themeobjects = get_list_of_themes();
 245             $themes=array();
 246             $themes[''] = get_string('forceno');
 247             foreach ($themeobjects as $key=>$theme) {
 248                 if (empty($theme->hidefromselector)) {
 249                     $themes[$key] = get_string('pluginname', 'theme_'.$theme->name);
 250                 }
 251             }
 252             $mform->addElement('select', 'theme', get_string('forcetheme'), $themes);
 253         }
 254
 255         if ((empty($course->id) && guess_if_creator_will_have_course_capability('moodle/course:setforcedlanguage', $categorycontext))
 256                 || (!empty($course->id) && has_capability('moodle/course:setforcedlanguage', $coursecontext))) {
 257
 258             $languages = ['' => get_string('forceno')];
 259             $languages += get_string_manager()->get_list_of_translations();
 260
 261             $mform->addElement('select', 'lang', get_string('forcelanguage'), $languages);
 262             $mform->setDefault('lang', $courseconfig->lang);
 263         }
 264
 265         // Multi-Calendar Support - see MDL-18375.
 266         $calendartypes = \core_calendar\type_factory::get_list_of_calendar_types();
 267         // We do not want to show this option unless there is more than one calendar type to display.
 268         if (count($calendartypes) > 1) {
 269             $calendars = array();
 270             $calendars[''] = get_string('forceno');
 271             $calendars += $calendartypes;
 272             $mform->addElement('select', 'calendartype', get_string('forcecalendartype', 'calendar'), $calendars);
 273         }
 274
 275         $options = range(0, 10);
 276         $mform->addElement('select', 'newsitems', get_string('newsitemsnumber'), $options);
 277         $courseconfig = get_config('moodlecourse');
 278         $mform->setDefault('newsitems', $courseconfig->newsitems);
 279         $mform->addHelpButton('newsitems', 'newsitemsnumber');
 280
 281         $mform->addElement('selectyesno', 'showgrades', get_string('showgrades'));
 282         $mform->addHelpButton('showgrades', 'showgrades');
 283         $mform->setDefault('showgrades', $courseconfig->showgrades);
 284
 285         $mform->addElement('selectyesno', 'showreports', get_string('showreports'));
 286         $mform->addHelpButton('showreports', 'showreports');
 287         $mform->setDefault('showreports', $courseconfig->showreports);
 288
 289         // Show activity dates.
 290         $mform->addElement('selectyesno', 'showactivitydates', get_string('showactivitydates'));
 291         $mform->addHelpButton('showactivitydates', 'showactivitydates');
 292         $mform->setDefault('showactivitydates', $courseconfig->showactivitydates);
 293
 294         // Files and uploads.
 295         $mform->addElement('header', 'filehdr', get_string('filesanduploads'));
 296
 297         if (!empty($course->legacyfiles) or !empty($CFG->legacyfilesinnewcourses)) {
 298             if (empty($course->legacyfiles)) {
 299                 //0 or missing means no legacy files ever used in this course - new course or nobody turned on legacy files yet
 300                 $choices = array('0'=>get_string('no'), '2'=>get_string('yes'));
 301             } else {
 302                 $choices = array('1'=>get_string('no'), '2'=>get_string('yes'));
 303             }
 304             $mform->addElement('select', 'legacyfiles', get_string('courselegacyfiles'), $choices);
 305             $mform->addHelpButton('legacyfiles', 'courselegacyfiles');
 306             if (!isset($courseconfig->legacyfiles)) {
 307                 // in case this was not initialised properly due to switching of $CFG->legacyfilesinnewcourses
 308                 $courseconfig->legacyfiles = 0;
 309             }
 310             $mform->setDefault('legacyfiles', $courseconfig->legacyfiles);
 311         }
 312
 313         // Handle non-existing $course->maxbytes on course creation.
 314         $coursemaxbytes = !isset($course->maxbytes) ? null : $course->maxbytes;
 315
 316         // Let's prepare the maxbytes popup.
 317         $choices = get_max_upload_sizes($CFG->maxbytes, 0, 0, $coursemaxbytes);
 318         $mform->addElement('select', 'maxbytes', get_string('maximumupload'), $choices);
 319         $mform->addHelpButton('maxbytes', 'maximumupload');
 320         $mform->setDefault('maxbytes', $courseconfig->maxbytes);
 321
 322         // PDF font.
 323         if (!empty($CFG->enablepdfexportfont)) {
 324             $pdf = new \pdf;
 325             $fontlist = $pdf->get_export_fontlist();
 326             // Show the option if the font is defined more than one.
 327             if (count($fontlist) > 1) {
 328                 $defaultfont = $courseconfig->pdfexportfont ?? 'freesans';
 329                 if (empty($fontlist[$defaultfont])) {
 330                     $defaultfont = current($fontlist);
 331                 }
 332                 $mform->addElement('select', 'pdfexportfont', get_string('pdfexportfont', 'course'), $fontlist);
 333                 $mform->addHelpButton('pdfexportfont', 'pdfexportfont', 'course');
 334                 $mform->setDefault('pdfexportfont', $defaultfont);
 335             }
 336         }
 337
 338         // Completion tracking.
 339         if (completion_info::is_enabled_for_site()) {
 340             $mform->addElement('header', 'completionhdr', get_string('completion', 'completion'));
 341             $mform->addElement('selectyesno', 'enablecompletion', get_string('enablecompletion', 'completion'));
 342             $mform->setDefault('enablecompletion', $courseconfig->enablecompletion);
 343             $mform->addHelpButton('enablecompletion', 'enablecompletion', 'completion');
 344
 345             $showcompletionconditions = $courseconfig->showcompletionconditions ?? COMPLETION_SHOW_CONDITIONS;
 346             $mform->addElement('selectyesno', 'showcompletionconditions', get_string('showcompletionconditions', 'completion'));
 347             $mform->addHelpButton('showcompletionconditions', 'showcompletionconditions', 'completion');
 348             $mform->setDefault('showcompletionconditions', $showcompletionconditions);
 349             $mform->hideIf('showcompletionconditions', 'enablecompletion', 'eq', COMPLETION_DISABLED);
 350         } else {
 351             $mform->addElement('hidden', 'enablecompletion');
 352             $mform->setType('enablecompletion', PARAM_INT);
 353             $mform->setDefault('enablecompletion', 0);
 354         }
 355
 356         enrol_course_edit_form($mform, $course, $context);
 357
 358         $mform->addElement('header','groups', get_string('groupsettingsheader', 'group'));
 359
 360         $choices = array();
 361         $choices[NOGROUPS] = get_string('groupsnone', 'group');
 362         $choices[SEPARATEGROUPS] = get_string('groupsseparate', 'group');
 363         $choices[VISIBLEGROUPS] = get_string('groupsvisible', 'group');
 364         $mform->addElement('select', 'groupmode', get_string('groupmode', 'group'), $choices);
 365         $mform->addHelpButton('groupmode', 'groupmode', 'group');
 366         $mform->setDefault('groupmode', $courseconfig->groupmode);
 367
 368         $mform->addElement('selectyesno', 'groupmodeforce', get_string('groupmodeforce', 'group'));
 369         $mform->addHelpButton('groupmodeforce', 'groupmodeforce', 'group');
 370         $mform->setDefault('groupmodeforce', $courseconfig->groupmodeforce);
 371
 372         //default groupings selector
 373         $options = array();
 374         $options[0] = get_string('none');
 375         $mform->addElement('select', 'defaultgroupingid', get_string('defaultgrouping', 'group'), $options);
 376
 377         if ((empty($course->id) && guess_if_creator_will_have_course_capability('moodle/course:renameroles', $categorycontext))
 378                 || (!empty($course->id) && has_capability('moodle/course:renameroles', $coursecontext))) {
 379             // Customizable role names in this course.
 380             $mform->addElement('header', 'rolerenaming', get_string('rolerenaming'));
 381             $mform->addHelpButton('rolerenaming', 'rolerenaming');
 382
 383             if ($roles = get_all_roles()) {
 384                 $roles = role_fix_names($roles, null, ROLENAME_ORIGINAL);
 385                 $assignableroles = get_roles_for_contextlevels(CONTEXT_COURSE);
 386                 foreach ($roles as $role) {
 387                     $mform->addElement('text', 'role_' . $role->id, get_string('yourwordforx', '', $role->localname));
 388                     $mform->setType('role_' . $role->id, PARAM_TEXT);
 389                 }
 390             }
 391         }
 392
 393         if (core_tag_tag::is_enabled('core', 'course') &&
 394                 ((empty($course->id) && guess_if_creator_will_have_course_capability('moodle/course:tag', $categorycontext))
 395                 || (!empty($course->id) && has_capability('moodle/course:tag', $coursecontext)))) {
 396             $mform->addElement('header', 'tagshdr', get_string('tags', 'tag'));
 397             $mform->addElement('tags', 'tags', get_string('tags'),
 398                     array('itemtype' => 'course', 'component' => 'core'));
 399         }
 400
 401         // Add custom fields to the form.
 402         $handler = core_course\customfield\course_handler::create();
 403         $handler->set_parent_context($categorycontext); // For course handler only.
 404         $handler->instance_form_definition($mform, empty($course->id) ? 0 : $course->id);
 405
 406         // When two elements we need a group.
 407         $buttonarray = array();
 408         $classarray = array('class' => 'form-submit');
 409         if ($returnto !== 0) {
 410             $buttonarray[] = &$mform->createElement('submit', 'saveandreturn', get_string('savechangesandreturn'), $classarray);
 411         }
 412         $buttonarray[] = &$mform->createElement('submit', 'saveanddisplay', get_string('savechangesanddisplay'), $classarray);
 413         $buttonarray[] = &$mform->createElement('cancel');
 414         $mform->addGroup($buttonarray, 'buttonar', '', array(' '), false);
 415         $mform->closeHeaderBefore('buttonar');
 416
 417         $mform->addElement('hidden', 'id', null);
 418         $mform->setType('id', PARAM_INT);
 419
 420         // Prepare custom fields data.
 421         $handler->instance_form_before_set_data($course);
 422         // Finally set the current form data
 423         $this->set_data($course);
 424     }
 425
 426     /**
 427      * Fill in the current page data for this course.
 428      */
 429     function definition_after_data() {
 430         global $DB;
 431
 432         $mform = $this->_form;
 433
 434         // add available groupings
 435         $courseid = $mform->getElementValue('id');
 436         if ($courseid and $mform->elementExists('defaultgroupingid')) {
 437             $options = array();
 438             if ($groupings = $DB->get_records('groupings', array('courseid'=>$courseid))) {
 439                 foreach ($groupings as $grouping) {
 440                     $options[$grouping->id] = format_string($grouping->name);
 441                 }
 442             }
 443             core_collator::asort($options);
 444             $gr_el =& $mform->getElement('defaultgroupingid');
 445             $gr_el->load($options);
 446         }
 447
 448         // add course format options
 449         $formatvalue = $mform->getElementValue('format');
 450         if (is_array($formatvalue) && !empty($formatvalue)) {
 451
 452             $params = array('format' => $formatvalue[0]);
 453             // Load the course as well if it is available, course formats may need it to work out
 454             // they preferred course end date.
 455             if ($courseid) {
 456                 $params['id'] = $courseid;
 457             }
 458             $courseformat = course_get_format((object)$params);
 459
 460             $elements = $courseformat->create_edit_form_elements($mform);
 461             for ($i = 0; $i < count($elements); $i++) {
 462                 $mform->insertElementBefore($mform->removeElement($elements[$i]->getName(), false),
 463                         'addcourseformatoptionshere');
 464             }
 465
 466             // Remove newsitems element if format does not support news.
 467             if (!$courseformat->supports_news()) {
 468                 $mform->removeElement('newsitems');
 469             }
 470         }
 471
 472         // Tweak the form with values provided by custom fields in use.
 473         $handler  = core_course\customfield\course_handler::create();
 474         $handler->instance_form_definition_after_data($mform, empty($courseid) ? 0 : $courseid);
 475     }
 476
 477     /**
 478      * Validation.
 479      *
 480      * @param array $data
 481      * @param array $files
 482      * @return array the errors that were found
 483      */
 484     function validation($data, $files) {
 485         global $DB;
 486
 487         $errors = parent::validation($data, $files);
 488
 489         // Add field validation check for duplicate shortname.
 490         if ($course = $DB->get_record('course', array('shortname' => $data['shortname']), '*', IGNORE_MULTIPLE)) {
 491             if (empty($data['id']) || $course->id != $data['id']) {
 492                 $errors['shortname'] = get_string('shortnametaken', '', $course->fullname);
 493             }
 494         }
 495
 496         // Add field validation check for duplicate idnumber.
 497         if (!empty($data['idnumber']) && (empty($data['id']) || $this->course->idnumber != $data['idnumber'])) {
 498             if ($course = $DB->get_record('course', array('idnumber' => $data['idnumber']), '*', IGNORE_MULTIPLE)) {
 499                 if (empty($data['id']) || $course->id != $data['id']) {
 500                     $errors['idnumber'] = get_string('courseidnumbertaken', 'error', $course->fullname);
 501                 }
 502             }
 503         }
 504
 505         if ($errorcode = course_validate_dates($data)) {
 506             $errors['enddate'] = get_string($errorcode, 'error');
 507         }
 508
 509         $errors = array_merge($errors, enrol_course_edit_validation($data, $this->context));
 510
 511         $courseformat = course_get_format((object)array('format' => $data['format']));
 512         $formaterrors = $courseformat->edit_form_validation($data, $files, $errors);
 513         if (!empty($formaterrors) && is_array($formaterrors)) {
 514             $errors = array_merge($errors, $formaterrors);
 515         }
 516
 517         // Add the custom fields validation.
 518         $handler = core_course\customfield\course_handler::create();
 519         $errors  = array_merge($errors, $handler->instance_form_validation($data, $files));
 520
 521         return $errors;
 522     }
 523 }